Chaplins are small, secreted proteins of streptomycetes that play instrumental roles in the formation of aerial hyphae and attachment of hyphae to surfaces. Here we show that the purified proteins self-assemble at a water/air interface into an asymmetric and amphipathic protein membrane that has an amyloid nature. Cryo-tomography reveals that the hydrophilic surface is relatively smooth, while ...

Cell surface hydrophobicity influences pathogenesis of Candida albicans. Previous studies suggested that stationary-phase hydrophilic and hydrophobic cells, obtained by growth at 37 and 23 degrees C, respectively, may have similar hydrophobic proteins. However, whether hydrophilic and hydrophobic surface proteins differ during the growth cycle at 37 degrees C is unknown. Freeze-fracture analysi...

The VOF model was employed to simulate the pool boiling under typical engine operating temperature conditions and experimentally validated. A trapezoidal raised surface morphology with a hydrophilic-hydrophobic combination designed, heat transfer ability bubble evolution phenomena on were analyzed. Then variance contribution of each structural parameter average rise evaluated. Finally, NSGA-II ...

The microphase separation of hydrated perfluorinated sulfonic acid membrane Nafion was investigated using Dissipative Particle Dynamics (DPD). The nafion as a polymer was modelled by connecting coarse grained beads which corresponds to the hydrophobic backbone of polytetrafluoroethylene and perfluorinated side chains terminated by hydrophilic end particles of sulfonic acid groups [1, 2]. Each f...

We demonstrate the fabrication of superhydrophobic surfaces consisting of micropillars with hydrophobic sidewalls and hydrophilic tops, referred to as Janus micropillars. Therefore we first coat a micropillar array with a mono- or bilayer of polymeric particles, and merge the particles together to shield the top faces while hydrophobizing the walls. After removing the polymer film, the top face...

Cell surface hydrophobicity (CSH) has been shown to be an important factor in the ability of the opportunistic pathogenic yeast Candida albicans to adhere to surfaces. Hydrophobic cells adhere more readily to host tissue, and are more resistant to phagocytic killing, than hydrophilic cells. Consequently, CSH plays an important role in the pathogenicity of C. albicans. Previous work suggested a ...

Although butterfly wings and water strider legs have an anti-wetting property, their working conditions are quite different. Water striders, for example, live in a wet environment and their legs need to support their weight and bear the high pressure during motion. In this work, we have focused on the importance of the surface geometrical structures in determining their performance. We have app...